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Finding the Fourth Proportional to 68,844.92, 102,801.06 and 54,645.64

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Solution

The fourth proportional to 68,844.92, 102,801.06 and 54,645.64 is: 81,598.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,844.92 : 102,801.06 = 54,645.64 : x
  2. Step 2: Convert to fraction form
    68,844.92/102,801.06 = 54,645.64/x
  3. Step 3: Cross multiply
    68,844.92x = 102,801.06 × 54,645.64
  4. Step 4: Simplify right side
    68,844.92x = 5,617,629,716.38
  5. Step 5: Solve for x
    x = 5,617,629,716.38/68,844.92
  6. Step 6: Final answer
    x = 81,598.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.